[Task]: Create a FTS4 LabEntity for database

[RivanParmar]

• Create a data class called LabFtsEntity in :core:database module.
• The data class shall contain only four values, i.e., labId, title, extraTitle and description.
• The data class needs to be marked with @Fts4. See https://developer.android.com/reference/androidx/room/Fts4.

This would allow the user to search for text in title, extra title and description of a lab.

[RivanParmar]

Resolved with 58ad002